In marine scientific investigation, seabed resource exploration, underwater geological mapping and underwater acoustic monitoring projects, acoustic sensors, sonar detectors and hydroacoustic survey devices are core observation hardware. Tiny flow noise and mechanical vibration noise generated by power equipment are very likely to cover up effective underwater acoustic signals, resulting in distorted survey data and failed ocean exploration missions. As the prime power component of subsea operation platforms, the underwater thruster directly determines the environmental adaptability of the whole survey system. Our low-noise optimized underwater thruster is tailor-made for marine survey scenarios, solving the noise interference pain point of traditional propulsion equipment once and for all.
This series of underwater thruster adopts exclusive professional noise reduction design covering mechanical structure, hydrodynamic layout and vibration isolation structure in three dimensions. For internal mechanical components, precise damping cushioning and vibration isolation mounting structures are added to the motor and transmission assembly, effectively isolating high-frequency vibration generated during high-speed operation and preventing vibration noise from being transmitted to the carrier equipment and spreading into seawater. On the hydrodynamic side, the propeller is subjected to airfoil optimization and tip vortex suppression treatment, which greatly reduces cavitation noise and turbulent flow noise when rotating in seawater, avoiding obvious water flow disturbance around the equipment.
Most conventional underwater thrusters ignore acoustic control during structural design. Their running mechanical vibration and propeller cavitation will continuously produce continuous broadband noise, which will seriously interfere with the normal receiving of underwater acoustic detection equipment, lead to sonar signal confusion, reduce the detection accuracy of underwater targets, and even make long-term fixed-point seabed observation stations unable to collect valid acoustic data normally. Our low-noise customized underwater thruster achieves ultra-quiet stable operation in the full working speed range, with extremely low radiated noise to the surrounding seawater.
While guaranteeing stable thrust output, the low-noise design will not cause any interference to hydrophones, side-scan sonar, underwater acoustic positioning and other professional survey instruments carried by ROV, AUV and marine survey buoys. The marine survey vessel or submersible equipped with this low-noise underwater thruster can complete high-precision seabed topographic scanning, marine biological acoustic tracking, submarine mineral resource detection and long-term underwater acoustic environment monitoring tasks without signal shielding.
Moreover, the low-noise operation feature also brings additional advantages for long-term underwater deployment. The quiet working state will not drive away marine life, which is more suitable for marine ecological surveys and underwater biological tracking observation projects. Combined with our magnetic coupling zero-leakage sealing technology, this low-noise underwater thruster not only meets the high acoustic requirements of marine survey, but also has long service life and low maintenance frequency, becoming the reliable power choice for high-end ocean survey engineering equipment worldwide.
